Shock! ! ! An overview of explosion-proof pneumatic ball valve products you don't know yet.

by:Lianke Valve     2022-07-22
The explosion-proof pneumatic ball valve will seal the electrical part, and then isolate the leakage of electric sparks, which greatly improves the safety protection of the staff. Explosion-proof pneumatic ball valves generally seal the incoming and outgoing wires of the terminal box, because electrical sparks may be generated instantaneously due to poor contact with the terminals. The explosion-proof pneumatic ball valve is composed of AT (GT) series pneumatic actuator and floating ball valve, which is suitable for the occasion of adjustment and cut-off. The explosion-proof pneumatic ball valve has excellent sealing performance, large flow capacity, simple structure, long service life and easy maintenance. The matching actuator has the characteristics of simple structure, compactness, excellent performance and large output torque. Explosion-proof pneumatic ball valve is equipped with explosion-proof stroke limit switch, explosion-proof solenoid valve, pressure reducing valve and 0.4-0.7MPa air source to realize switch operation, and send two pairs of passive contact signals to indicate the valve switch. The actuators are divided into single-acting and double-acting models. The unique advantage of the single-acting type is that once the power source fails, the explosion-proof pneumatic ball valve will automatically be in the open or closed position according to the requirements of the control system. Explosion-proof pneumatic ball valves are widely used in chemical, petroleum, textile, electric power, food and pharmaceutical, refrigeration, aviation, aerospace, papermaking and other industrial fields. Product features of explosion-proof pneumatic ball valve (1) The fluid resistance is small, and the ball valve is the one with the smallest fluid resistance among all valves. Even the reduced-diameter ball valve, its fluid resistance is quite small. (2) The thrust bearing reduces the friction torque of the valve stem, so that the long-term operation of the valve stem can be balanced and flexible. (3) The valve seat has good sealing performance. The sealing ring made of PTFE and other materials is easy to seal in structure, and the sealing capacity of the ball valve increases with the increase of the medium pressure. (4) The valve stem seal is reliable. Since the valve stem only rotates and does not move up and down, the packing seal of the valve stem is not easy to be damaged, and the sealing capacity increases with the increase of the pressure of the medium. Main design standards of explosion-proof pneumatic ball valve design and manufacture GB12237-89, API608, API 6D, JPI 7S-48, BS5351, DIN3357 Flange size JB/T74~90, GB9112~9131, HGJ44~76, SH3406, ANSI B16.5, JIS B2212~2214, DIN2543 Structure length GB12221-89, ANSI B16.10, JIS B2002, NF E29-305, DIN3202 Inspection and test JB/T 9092, API 598, GB/T13927 Explosion-proof pneumatic ball valve product selection (1) valve Body parameters: series parameters such as nominal diameter, working pressure, process medium, application occasion, valve body material, etc. (2) Actuator parameters: Actuator form, control mode, control signal (4-20mA, 1-5V), action mode (air-open type, air-close type) The explosion-proof pneumatic ball valve adopts a new series of pneumatic actuators. Double-acting and single-acting (spring return), rack and pinion transmission, safe and reliable; large-diameter valves adopt series AW type pneumatic actuator fork transmission, reasonable structure, large output torque, double-acting and single-acting . 1. Gear type double piston, large output torque and small volume. 2. The cylinder is made of aluminum-gold material, which is light in weight and beautiful in appearance. 3. Manual operating mechanisms can be installed on the top and bottom. 4. The rack connection can adjust the opening angle and rated flow. 5. The actuator can be equipped with electrified signal feedback indication and various accessories to realize automatic operation. 6. IS05211 standard connection provides convenience for product installation and replacement. 7. Adjustment screws at both ends allow standard products to have an adjustable range of ±4° at 0° and 90°. Ensure synchronization accuracy with the valve. The above is an overview of explosion-proof pneumatic ball valves. Do you understand? If you have any questions or want to know about other valves, please come to Lianke Valve Co.,Ltd. for consultation. Lianke Valve Co.,Ltd. is a company that focuses on valve innovation and manufacturing, and strives to bring good valves to everyone.
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